반응 #514365

반응 방정식

1,1-diamino-2,2-dinitroethylene

nitric acid

2-methyl-4,5pyrimidindione

water

→

2-methyl-4,6-pyrimidindione

수율 35.0%

용매

sulphuric acid

반응 조건

후처리

1. 1
   workup.WAITWithin a few seconds
2. 2
   세척The precipitate were washed with water
3. 3
   기타dried at 50° C
4. 4
   기타2.6 g 1,1-diamino-2,2-dinitroethylene was recovered (35% yield)

실험 절차

Finely ground 2-methyl-4,5pyrimidindione (5.1 g, 0.05 mole) was dissolved in concentrated sulphuric acid (40 ml, 1.84 g/cm3) at 15-20° C. during vigorous stirring. At the same temperature nitric acid (8.0 ml, 1.52 g/cm3) was added over a 30-min period. After 3 h, the reaction mixture was poured into water. Within a few seconds, bright yellow crystals settled out (1,1-diamino-2,2-dinitroethylene). The precipitate were washed with water and dried at 50° C. 2.6 g 1,1-diamino-2,2-dinitroethylene was recovered (35% yield).

출처